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Thread: Dosing EM6910

  1. #1
    Senior Member Rusty's Avatar
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    Dosing EM6910

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    We all know the Sunbeam needs to be dosed to within 3mm of the top of the basket after tamping as per the manual: Tamp the coffee. The level of coffee must be 3mm below the filter basket rim.

    I never found a consistent way of achieving this until I bought a $25 pocket digital scales. They weigh up to 50g in 0.01g increments.

    Laugh if you will, but I use 21.5g and my dose is spot on every time. No more wet or wettish pucks and a great pour.

    This attention to dose was triggered when I took delivery of my Dema.RAL tamper - so now I get a repeatable dose and a perfectly even tamp, not to mention a fantastic in the cup result :D

    Thanks Angelo for a great product and thanks Sunbeam for a machine that delivers when used properly.

    BTW Ive had mine for a year now :)

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    Re: Dosing EM6910

    those scales are great. FWIW, I use 19.2gm in my synesso double basket on my Silvia...

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    Re: Dosing EM6910


    Quote Originally Posted by 777C66742B22130 link=1273709693/1#1 date=1273719578
    I use 19.2gm in my synesso double basket on my Silvia
    Ha.... another fanatic 8-)

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    Re: Dosing EM6910

    Quote Originally Posted by 406761666B120 link=1273709693/0#0 date=1273709693
    We all know the Sunbeam needs to be dosed to within 3mm of the top of the basket after tamping as per the manual: Tamp the coffee. The level of coffee must be 3mm below the filter basket rim.
    Hey Rusty,
    I know that the manual says "Tamp the coffee. The level of coffee must be 3mm below the filter basket rim."

    I find that the shower screen is about 6mm below the seal level and if you measure the depth of the spent puck, it is about 6.5mm below the rim after extraction (on my machine anyway).The extra .5mm is probably due to the rim embedding itself into the seal a bit on tightening.

    I get a good impression of the shower screen and quite a dry firm puck surface so I dont think that I am underdosing.

    I also wonder if the fact that if most people are following Sunbeams advice on 3mm that this is causing a lot of premature wear of the collar.

    P.S. I am using about 18g in a double basket

  5. #5
    Senior Member Rusty's Avatar
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    Re: Dosing EM6910

    Hi Shawty,

    Good to see you still enjoying the EM6910.

    I cant explain your figures - maybe AM would like to shed some light on this ::)

    I agree you dont seem to be underdosing, but I cant see how dosing 20% less than I do can give comparable results :o

    When you say about 18g how accurate is that?

    Very interesting comparison thats got me stumped.

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    Re: Dosing EM6910

    Quote Originally Posted by 406761666B120 link=1273709693/0#0 date=1273709693
    We all know the Sunbeam needs to be dosed to within 3mm of the top of the basket after tamping as per the manual: Tamp the coffee. The level of coffee must be 3mm below the filter basket rim.

    GUIDE / Rule of THUMB ONLY... *AND assumes that every thing is STANDARD..


    Ya have a spacer or a different basket with higher lip, shower screen mod , shower screen not tight, group handle locked around to the far right *etc etc etc and the 3mm is good for *- Naught.


    Hey Rusty,
    I know that the manual says "Tamp the coffee. The level of coffee must be 3mm below the filter basket rim."

    I find that the shower screen is about 6mm below the seal level and if you measure the depth of the spent puck, it is about 6.5mm below the rim after extraction (on my machine anyway).The extra .5mm is probably due to the rim embedding itself into the seal a bit on tightening.

    I get a good impression of the shower screen and quite a dry firm puck surface so I dont think that I am underdosing.

    I also wonder if the fact that if most people are following Sunbeams advice on 3mm that this is causing a lot of premature wear of the collar.

    P.S. I am using about 18g in a double basket
    A good impression means WHAT ? *

    Deep and clear impression of the shower screen; then that is over dosing and ya will do the collar.

    Send pics...

    ALSO: the newer groups on the latest EM6910 have some extra changes as well as the changes to the lugs...

    3 - 4mm was fine for me... and left a slight impression not a Good impression..

    4 or 5mm plus *would be so under dosed it would be sloppy and the puck would stick to the shower screen.

    AND


    Quote Originally Posted by 3215131419600 link=1273709693/4#4 date=1273730199
    Hi Shawty,

    I cant explain your figures - maybe AM would like to shed some light on this *::)

    I agree you dont seem to be underdosing, but I cant see how dosing 20% less than I do can give comparable results *:o


    Very interesting comparison thats got me stumped.
    Me too...

    Would love to be on site and have a close look... So many variables.. * 3 units in the shed and all are 4 to 5mm at max.. *( remember I have modded the lugs.... So a 6:00 lock in is not as close to the shower screen.)

    Did have a mate drop over... No matter what setting choke... giggled like a schoolgirl.. *Not going to sell or give him one... *

    He was bitching that the EM6910 was too light for use...

    He is only happy when he can not physically move the group handle any more and that means one hand to hold the EM down on the bench while he forces the group to about 4:00 *:o

    His comment was ... I was trained on a commercial machine and we also did it that way.. *An old school approach and an old Boema I think... *I guess the heads wore out at some stage...


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    Re: Dosing EM6910

    Quote Originally Posted by 0D2A2C2B265F0 link=1273709693/4#4 date=1273730199
    When you say about 18g how accurate is that?
    Just measured, 18.8g

    Quote Originally Posted by 1E31383A2D123E313E383A323A312B5F0 link=1273709693/5#5 date=1273732001
    A good impression means WHAT ?

    Deep and clear impression of the shower screen; then that is over dosing and ya will do the collar.
    In the context of my post this was to indicate that I wasnt underdosing at 18.8g, hence getting a good impression of the showerscreen and a firm dry puck.

    If I dose any higher I can feel the resistance much earlier when loading the group

    This can be confirmed with the 5c piece test

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    Re: Dosing EM6910

    makes me wanna crack out the digital scales now .... :o

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    Re: Dosing EM6910

    Quote Originally Posted by 524940565558210 link=1273709693/6#6 date=1273738083
    Just measured, 18.8g
    As a matter of interest where does the pressure gauge sit during the pour and how many seconds does it take?

    I know we were taught not to worry about those numbers but they may be helpful in this case *;)

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    Re: Dosing EM6910

    Quote Originally Posted by 654244434E370 link=1273709693/8#8 date=1273781854
    Quote Originally Posted by 524940565558210 link=1273709693/6#6 date=1273738083
    Just measured, 18.8g
    As a matter of interest where does the pressure gauge sit during the pour and how many seconds does it take?

    I know we were taught not to worry about those numbers but they may be helpful in this case *;)
    Around 1.00 - 1.30 and about 20-30 secs depending on how exactly I dose. I sometimes miss but this is just operator error.

    I dont see my situation as being a problem case especially after over a year of use and on inspection can see or feel very little wear of the collar. That is as good as I can while it is still in the machine.

    I would be interested if you would measure the depth of your puck from the top of the basket after extraction or at least put your tamper back in and compare the depth as to when you tamped to start with to see if it has been compressed any more.

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    Re: Dosing EM6910

    Quote Originally Posted by 716A6375767B020 link=1273709693/9#9 date=1273787800
    Quote Originally Posted by 654244434E370 link=1273709693/8#8 date=1273781854
    Quote Originally Posted by 524940565558210 link=1273709693/6#6 date=1273738083
    Just measured, 18.8g
    As a matter of interest where does the pressure gauge sit during the pour and how many seconds does it take?

    I know we were taught not to worry about those numbers but they may be helpful in this case *;)
    Around 1.00 - 1.30 and about 20-30 secs depending on how exactly I dose. I sometimes miss but this is just operator error.

    I dont see my situation as being a problem case especially after over a year of use and on inspection can see or feel very little wear of the collar. That is as good as I can while it is still in the machine.

    I would be interested if you would measure the depth of your puck from the top of the basket after extraction or at least put your tamper back in and compare the depth as to when you tamped to start with to see if it has been compressed any more.

    Will have a closer look and may be a pic this weekend.

    However as often said *by some one 2 + 2 = 5 * ;D

    If it feels good AND the collar is not being abused AND whats in the cup is as expected AND PRBGAF is acknowledged...

    Sounds like your on the money.. Great work...

  12. #12
    Senior Member Rusty's Avatar
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    Re: Dosing EM6910


    What I thought looked like 3mm was actually 4mm ::)

    After the shot the measurement was 5mm with an impression of the screw showing in the dry puck.

    My gauge shows the same as yours at 1:30 but the pour time is 25-35 seconds.


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    Re: Dosing EM6910

    Quote Originally Posted by 5A7D7B7C71080 link=1273709693/11#11 date=1273789703
    What I thought looked like 3mm was actually 4mm *::)

    After the shot the measurement was 5mm with an impression of the screw showing in the dry puck.

    My gauge shows the same as yours at 1:30 but the pour time is 25-35 seconds.
    Strange... We usually get it the other way round.. However it is still about the final outcome ;)

    Will get back with some side by sides teh Saturday / Sunday and if the Klub T2 goes, I will even have some space at last.

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    Senior Member GregWormald's Avatar
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    Re: Dosing EM6910

    Just a caution on dosing here:

    I love my mini digital scales, however, the correct dose for my machine varies from 18.5 grams to 23.5 grams depending on the density of the beans. This is different for each bean variety/blend, and for each roast level.

    I use the scales to weigh the amount of grounds that gives me the correct volume, and then I grind that weight for that particular bean (to reduce waste, and multiple grinds to get the right volume).

    Of course if you use the same beans the density wont change much. I like variety and often have 3 or 4 different single origins on the go.

    Greg

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    Senior Member Rusty's Avatar
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    Re: Dosing EM6910


    Good point Greg 8-)


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    Re: Dosing EM6910


    Another point of course is that grinding finer will increase the weight for a set volume and vice-versa.

    The same weight of beans ground to powder will tamp down a lot more than a grind as coarse as sand ::)

    Aint science wonderful :D


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    Re: Dosing EM6910

    Could someone post a clear pic of a just tamped basket -- Im still new to this. I measure (with a stainless steel ruler) 3mm from inside at the point where it just begins to curve outwards to the rim. From this point, Ill get a soggy puck or sometimes itll stick to the inside.

    Ive looked on youtube and watched the Sunbeam coffee tips & barista basics DVD more than 10 times and it never really gives you a good look at just how much coffee is packed in.

    Of all the things Ive learnt in the last week or so, this is the most challenging for me, as far as consistency is concerned.

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    Re: Dosing EM6910

    Quote Originally Posted by 38342D0A36273A3321550 link=1273709693/16#16 date=1274102568
    Could someone post a clear pic of a just tamped basket -- Im still new to this. I measure (with a stainless steel ruler) 3mm from inside at the point where it just begins to curve outwards to the rim. From this point, Ill get a soggy puck or sometimes itll stick to the inside.

    Ive looked on youtube and watched the Sunbeam coffee tips & barista basics DVD more than 10 times and it never really gives you a good look at just how much coffee is packed in.

    Of all the things Ive learnt in the last week or so, this is the most challenging for me, as far as consistency is concerned. *
    Still not so simple... What works for one will not for another.

    Diferent beans and diferent grind will perform differently and the rate of swelling may or may not be an issue... Also how hard / soft / fine ya grind.

    However if sloppy and or sticking to teh shower screen... Ya underdosing; thus can afford to add a bit more to teh basket.

    Slow and steady and do not rush... It could just be 0.5 of a mm that turns the corner for ya.

    PS. No one said good coffee was easy and or could be learnt over night...

    Unless it is Coffee2di4... She and Scoots are super freaks; when it comes to coffee ;D :D ;)

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    Re: Dosing EM6910

    Thanks for the speedy reply. Im not looking for an easy way or a quick way. Im just doing the best I can to find the best starting point for dose, grind, tamp and extraction time. Then play add and subtract from all those points until I get something Im happy with.

    Im having a blast learning all this stuff along the way. It just seems that when I think Ive got one thing right, Ill change something else ever so slightly and itll mess everything else up. I mean that in a good way as its helping me learn where Ive gone wrong in other areas of preparing for a shot. At the same time, I wont deny its a little disheartening when I realise Ive gone through 11kg in 8 days and I feel like I havent really progressed.

    A friend told me today that I should use the single basket instead of the double as the single is closer to the true standard of a double. Is this true? Are the baskets way too big and if so, should I look at replacing them with something else?

  20. #20
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    Re: Dosing EM6910

    I found the Sunbeam single basket tricky to use.
    Stick to the double.
    If you replace them with something else youll need to start all over again.
    You dont want that, do you?

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    Re: Dosing EM6910

    Quote Originally Posted by 7D415C474D4C5B4E464D290 link=1273709693/19#19 date=1274106676
    I found the Sunbeam single basket tricky to use.
    Stick to the double.
    If you replace them with something else youll need to start all over again.
    You dont want that, do you?
    Not with the WDT + weight based dosing ;)

    one shotglass of beans --> WDT --> portafilter tap on bench to level --> Tamp and pour.

    works like a charm for the single basket every single time.

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    Re: Dosing EM6910

    I prefer doubles for myself so had no incentive to persist with the single basket.
    Im sure it works for you.

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    Re: Dosing EM6910

    "-.-

    I wish i could take doubles, but I seriously run the risk of being overcaffeinated with three shots a day.

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    Re: Dosing EM6910

    Quote Originally Posted by 724E5348424354414942260 link=1273709693/21#21 date=1274145749
    I prefer doubles for myself so had no incentive to persist with the single basket.
    Im sure it works for you.
    Me two... AND if I want a single; just dump the other side or collect for iced coffee..

    Quote Originally Posted by 3D222A3934313535580 link=1273709693/22#22 date=1274156953
    "-.-

    I wish i could take doubles, but I seriously run the risk of being overcaffeinated with three shots a day.
    Do not see what is so hard about that and it means no group changes or baskets or tamp or grinder setting to chance..

    KISS = double or tipple weight basket.

    I need a car for work... All speed limits are 60 to 80.

    I on occasion need to go faster.

    Am I anal enough or wasteful enough to have two separate systems and maintain two lots of crap..

    Na... The right one; will allow me to do either option with little effort and is cost and time effective.

    KISS

    Single shot baskets are for dead roaches...


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    Re: Dosing EM6910

    Quote Originally Posted by 535F46615D4C51584A3E0 link=1273709693/16#16 date=1274102568
    Could someone post a clear pic of a just tamped basket -- Im still new to this. I measure (with a stainless steel ruler) 3mm from inside at the point where it just begins to curve outwards to the rim. From this point, Ill get a soggy puck or sometimes itll stick to the inside.
    Tamped and measured from very top of basket using depth guage on verniers.

    Notice that my group locks at about 5 oclock which would be lowering the shower screen a little more than usual in the basket.

    Gave about a 30-32 second pour with a dry puck that knocked out in one piece








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    Re: Dosing EM6910

    wow....thats getting awfully technical, or perhaps "anal" about tamp depths etc. Looking at the pic # 1761 you either have a worn collar, buggered seal or simply underpacked your filter

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    Re: Dosing EM6910

    Wow. Thank you so much for those amazing photos. I really appreciate the attention to detail. The vernier caliper was a nice touch! :)

    My freshly dosed and tamped basket is almost identical to the last image (1762) and perhaps just a tiny bit more. Although I only ever lock it in at 6 oclock. Just wondering if I should crank it over another notch. Im only concerned if I may be putting excess pressure on the seals and lock in rings and such.

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    Re: Dosing EM6910

    Quote Originally Posted by 292128263131362A440 link=1273709693/25#25 date=1274268153
    wow....thats getting awfully technical, or perhaps "anal" about tamp depths etc. *Looking at the pic # 1761 you either have a worn collar, buggered seal or simply underpacked your filter
    Pray tell why ?

    A few little splatters top r/h side ?

    Already commented that he is locking in a bit further to the right...

    Underpacking... Just a tad in my books... Not enough to be over concerned... Better than OVER dosing...

    Shot at that point in time looks OK..

    What is teh sweet spot ?

    What did teh cup finish up like ?
    Quote Originally Posted by 29253C1B27362B2230440 link=1273709693/26#26 date=1274271939
    Just wondering if I should crank it over another notch. Im only concerned if I may be putting excess pressure on the seals and lock in rings and such.
    If ya crank / force it you do two things..

    1: One stress the system
    2: Add extra compression to the puck.

    Oh... 2 *x *5mg Val tabs were good and that neck pain all but went

    More must be better... Lets take Errrr 10 *:o

    More is not better.

    I would rather underdose and use a finer grind; than force things, crush seals and stuff collars... Strange that *8-)

  29. #29
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    Re: Dosing EM6910

    Quote Originally Posted by 032C2527300F232C2325272F272C36420 link=1273709693/27#27 date=1274276563
    If ya crank / force it you do two things..

    1: One stress the system
    2: Add extra compression to the puck.
    So I shouldnt be using that 400mm long piece of 40mm galv water pipe to lock the group handle into position. :D

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    Re: Dosing EM6910

    Quote Originally Posted by 724E475F4A2B0 link=1273709693/28#28 date=1274278014
    Quote Originally Posted by 032C2527300F232C2325272F272C36420 link=1273709693/27#27 date=1274276563
    If ya crank / force it you do two things..

    1: One stress the system
    2: Add extra compression to the puck.
    So I shouldnt be using that 400mm long piece of 40mm galv water pipe to lock the group handle into position. *:D
    Only if those coach bolts through the base are into something solid...

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    Re: Dosing EM6910

    Quote Originally Posted by 6C646D637474736F010 link=1273709693/25#25 date=1274268153
    wow....thats getting awfully technical, or perhaps "anal" about tamp depths etc. *Looking at the pic # 1761 you either have a worn collar, buggered seal or simply underpacked your filter
    The verniers are just easier for me as I dont have a ruler where zero is at the very end.
    My collar looks and feels pretty good.
    I know thay my seal is worn (just grabs at 6 oclock and locks well at 5 oclock) and it also has a small split but doesnt leak yet.
    I happened to do the 5c piece test during this and the coin was imbedded about half its thickness into the puck.
    This is confirmed with the readings on the verniers before and after the shot.
    The puck has expanded about .5mm against the shower screen (7.4-6.9) and the coin is about 1.25mm thick.
    So allowing for some inaccuracies in the measuring process it seemed about right. (go easy on me AM :P)

    Quote Originally Posted by 6C60795E62736E6775010 link=1273709693/26#26 date=1274271939
    Just wondering if I should crank it over another notch. Im only concerned if I may be putting excess pressure on the seals and lock in rings and such. *
    As AM has said I wouldnt be putting any more pressure than is required to stop the basket from leaking during extraction.
    There is no reason to put excess pressure and could only serve to wear out the collar early.

    Quote Originally Posted by 406F6664734C606F6066646C646F75010 link=1273709693/27#27 date=1274276563
    What did the cup finish up like ?
    Was a blend of 1/2 Peru Ceja de Selva Estate and 1/2 Brazil Original Bourbon roasted in my corretto. (Just emptied the remains of 2 bags - I have no idea on blending)
    It was the first time I had done 800g and all went well - just used more heat than usual.
    I dont usually drink straight espresso but was plesantly surprised at how fruity this was. With milk most of mine have a more chocolately taste.

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    Re: Dosing EM6910

    Looks all about right and sounds OK to me...

    Good balance between group position / force / seal management and understand whats in the cup..

    I give you an 83% mark... Always got to leave room for improvement and that improvement has to be achievable..

    You to can answer all the EM69xx questions.. *Looks like ya apprenticeship is almost done and dusted.


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    Re: Dosing EM6910

    Quote Originally Posted by 705F5654437C505F5056545C545F45310 link=1273709693/23#23 date=1274158764
    Single shot baskets are for dead roaches...

    then call me roachy!

    Everyone here always bangs on about how the double basket gives a much better shot, but every time I read this on here, i go back to the double and persist with it, tamp, grind, change grind, tamp, nup!.
    I can never get the double to taste anywhere near as good as the single.

    Maybe its because Ive refined my techniques with the single. And for the record, I am a roaster now also...and the single basket is still by far the winner.

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    Re: Dosing EM6910

    Quote Originally Posted by 717D6E686E75641C0 link=1273709693/32#32 date=1274343802
    then call me roachy!
    Thats good mate! ;D

    Ive had the same experiences with single baskets as almost everyone here, always taste crap, early blonding, fractures in the puck........= YUCK, but its awesome that youve nailed it!, have you had a look at the pour with a naked PF?

  35. #35
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    Re: Dosing EM6910

    Quote Originally Posted by 0501273E3E3B24333C520 link=1273709693/33#33 date=1274344583
    Ive had the same experiences with single baskets as almost everyone here, always taste crap, early blonding, fractures in the puck........= YUCK, but its awesome that youve nailed it!, have you had a look at the pour with a naked PF?
    Amen to that, Ive got about 4 singles, all in a box down in the shed. ;)

  36. #36
    Senior Member GregWormald's Avatar
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    Re: Dosing EM6910

    Without access to the specific setup all we can do here is state the generalities and probabilities.

    In the end, if its working for you, ITS WORKING.

    Enjoy the coffee.

    Greg

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    Re: Dosing EM6910

    2 interesting pics
    Even using a reasonable amount of force on the shower screen I could only get the guage to read 7.1mm
    Would be interested to know how deep the shower screen is on other CSrs EM6910 machines




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    Re: Dosing EM6910

    Quote Originally Posted by 7B5C5A5D50290 link=1273709693/4#4 date=1273730199
    Hi Shawty,

    Good to see you still enjoying the EM6910.

    I cant explain your figures - maybe AM would like to shed some light on this *::)

    I agree you dont seem to be underdosing, but I cant see how dosing 20% less than I do can give comparable results *:o

    When you say about 18g how accurate is that?

    Very interesting comparison thats got me stumped.

    Ive always dosed the way they recommended , and have looks like I now need a new collar. What is the replacement cost from a service agent ?

  39. #39
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    Re: Dosing EM6910

    ~$250 last one i heard, AM should have a better idea though......


    CALLING AngerManagement!!!!! price check isle 9!


    ;D

  40. #40
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    Re: Dosing EM6910

    Quote Originally Posted by 495E5F5F3B0 link=1273709693/37#37 date=1275613454
    Ive always dosed the way they recommended , and have looks like I now need a new collar. What is the replacement cost from a service agent ?
    1: They always say that ;)

    Problem is Text / Words Vs actual process is often very different..

    Not saying you... But have seen customers almost go ape over teh counter as to "I followed teh instructions"... Yet when your see it done... Ya understand there are things missing in the translation.

    2: I follow all instructions to the letter with my wife... Note: I get it wrong about 95% of teh time ::) ::) ::)


    Price check !!

    1: What is ya post code - Just like insurance and shopping chains - Price depends on who you are ;)

    Sorry... Price depends a lot on who you go to... Should not; but appears that way from teh feedback I and CS receive via various posts...

    Brisbane..

    A: Collar about <$62
    B: Fitted about <$180 including teh collar and tested and maybe a new seal as well.

    Other states / agents appear to be from about $180 to $280...


  41. #41
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    Re: Dosing EM6910

    I just bought a replacement collar for $61. Was going to attmpt it myself - but after reading this thrEad decided to dose slightly less than usual - up to the first trutamp ring on my Pullman tamper. Guess what - no more leaking around the group head! Im sure a collar replacement isnt far off though as Im locking in at around 4:30-5 oclock.

    Previously I was dosing around 3mm, now Id say its about 5mm from the top of the basket.

  42. #42
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    Re: Dosing EM6910

    After reading this thread, Im scared to dose at all. Im about 10mm away from the top!!!!!

  43. #43
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    Re: Dosing EM6910

    This is almost an exact science, dose to much you damage the collar, dose to little and you get a stuck sloppy puck ::) i tend to over dose alittle but i hate the stuck puck :)

  44. #44
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    Re: Dosing EM6910

    Quote Originally Posted by 213D30273031363425263C362038550 link=1273709693/42#42 date=1275706966
    This is almost an exact science, dose to much you damage the collar, dose to little and you get a stuck sloppy puck ::) i tend to over dose alittle but i hate the stuck puck :)
    The fresher the beans, the less of an exact science it is because fresh beans expand appropriately when infused :)

  45. #45
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    Re: Dosing EM6910

    Thats good news, i always buy my beans from beanbay :)

  46. #46
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    Re: Dosing EM6910

    Quote Originally Posted by 292C2A2B232C362D450 link=1273709693/41#41 date=1275645467
    After reading this thread, Im scared to dose at all. Im about 10mm away from the top!!!!!
    I cant see if your 10mm away from the top how you could get decent pressure. And how does the coffee taste? :P

    I dose with about 4 to 5mm of space left from the top. This is about just over half the stainless steel thing on the SB tamper. Sometimes i get a soggy puck but thats better then having a worn collar i guess. ::)


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    Re: Dosing EM6910

    Well under dosing only got me so far. Leaks started again so I pulled her apart and replaced the collar. Not too difficult - just fiddly. As expected, the collar was worn about 15mm at the beginning of each of the rails. I got 20 months of use so Im not too fussed. Hopefully it will last me another 12 months at least so I can gather some funds for a e61 machine.

  48. #48
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    Re: Dosing EM6910

    Quote Originally Posted by 6C6966616D64257B6966080 link=1273709693/46#46 date=1275861964
    Well under dosing only got me so far. Leaks started again so I pulled her apart and replaced the collar. Not too difficult - just fiddly. As expected, the collar was worn about 15mm at the beginning of each of the rails. I got 20 months of use so Im not too fussed. Hopefully it will last me another 12 months at least so I can gather some funds for a e61 machine.
    If the rails are worn.. It is speeded up when over dosing as the lugs are being forced onto teh rails.

    Had a couple of demo dead units here on teh weekend..

    One early EM6900 with more than 4 years was only showing slight malformed rails..

    Rather than spending $100 plus on a new collar etc...

    Just mod ya group lugs as per my posts or buy a new Group handle of teh new style... Will lock in a bit more to teh left and sit on new part of the rail... Due to teh non stepped lead it is also, less likely to cause as much damage when you overdose.


  49. #49
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    Re: Dosing EM6910

    Yeah Im just going to dose less & grind finer to prolong this collars life. At the moment its locking in tight and at 6:30! Like I said I just need 12 months before its upgrade time.

    All being said though now that Ive changed the collar Id be confident to do it again. With the right tools & some care its not difficult.

  50. #50
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    Re: Dosing EM6910

    Quote Originally Posted by 44414E49454C0D53414E200 link=1273709693/48#48 date=1275868676
    With the right tools & some care its not difficult.
    True..

    DO you still have teh old one ?




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